and professor patrick turney is from san francisco state's department of recreation parks and tourism. but thank you so much for being here. >> this is to report on the economic study? given that you're not city staff, we'll have to give you two minutes and we'll ask follow-up questions. >>> okay. good afternoon. i quickly wanted to go over two key points about the economic impact study. first of all, it was done using two primary means of data collection. one is on-site validation survey with 22 1 completed interviews. the other was a post event online survey that had 35 51 completed responses. * we use a very conservative approach on this analysis. we excluded that is, we did not consider the following groups. any resident of san francisco who was visiting at that event was excluded from the economic analysis. if there were not attending the event primarily, if they're not visiting san francisco primarily to attend a event, they were excluded. there were some other factors we excluded outside of san francisco. we compiled average spending from the 3500 plus individuals and we used a